Botany - Section A
1. Axillary bud and terminal bud are derived from the activity of:
1. Lateral meristem
2. Intercalary meristem
3. Apical meristem
4. Parenchyma
2. The flower shown in the given figure represents the members of Family:
1. Leguminosae
2. Malvaceae
3. Cruciferae
4. Compositae
3. Consider the following statements:
I: |
The stored food in Rhodophyceae is floridean starch. |
II: |
Cellulose and algin are present in the cell wall of Phaeophyceae. |
III: |
Chlorophyceae members have 2 laterally placed unequal flagella. |
Which of the above statements are true?
1. I and II only
2. I and III only
3. II and III only
4. I, II and III
4. Match each item in Column I with one in Column II and select the correct match from the codes given:
|
Column I [Plant part] |
|
Column II [Vascular bundle] |
A |
Dicot root |
P |
Conjoint and open |
B |
Monocot root |
Q |
Conjoint and closed |
C |
Dicot stem |
R |
Radial, exarch, 2-6 in number |
D |
Monocot stem |
S |
Radial, exarch, polyarch [more than 6] |
Codes:
|
A |
B |
C |
D |
1. |
R |
S |
Q |
P |
2. |
R |
S |
P |
Q |
3. |
P |
Q |
R |
S |
4. |
Q |
P |
S |
R |
5. Biodiversity hotspots are characterised by all the following features except:
1. |
Presence of a large number of species |
2. |
High degree of endemism |
3. |
Mostly located in the tropical region |
4. |
No threat of extinction of any species |
6. Match each item in Column I with one in Column II and select the correct match from the codes given:
|
Column I
[Stamen] |
|
Column II
[Description] |
A |
Epiphyllous |
P |
Attached to gynoecium |
B |
Epipetalous |
Q |
Attached to petals |
C |
Staminode |
R |
Attached to perianth |
|
|
S |
Sterile stamen |
|
|
T |
Plants with only male flowers |
Codes:
|
A |
B |
C |
1. |
Q |
R |
S |
2. |
R |
Q |
T |
3. |
R |
Q |
S |
4. |
P |
Q |
S |
7. Consider the given two statements:
Assertion (A): |
In C4 plants, photorespiration does not occur. |
Reason (R): |
They have a mechanism that increases the concentration of CO2 at RuBisCO site. |
1. |
(A) is True but (R) is False. |
2. |
Both (A) and (R) are True but (R) does not correctly explain (A). |
3. |
Both (A) and (R) are True and (R) correctly explains (A). |
4. |
(A) is False but (R) is True. |
8. The structures that help some bacteria to attach to rocks and/or host tissues are?
1. Rhizoids
2. Fimbriae
3. Mesosomes
4. Holdfast
9. In the diagram identify A to D:
|
A |
B |
C |
D |
1. |
Synergid |
Polar nuclei |
Male gamete |
Antipodal |
2. |
Synergid |
PEN |
Male gamete |
Antipodal |
3. |
Antipodal |
Polar nuclei |
Egg cell |
Synergid |
4. |
Antipodal |
PEN |
Egg cell |
Synergid |
10. Secondary productivity in an ecosystem can be defined as:
1. |
The amount of chemical energy, typically expressed as carbon biomass, that primary producers create in a given length of time. |
2. |
The rate at which all the autotrophs in an ecosystem produce net useful chemical energy. |
3. |
The rate of formation of new organic matter by consumers. |
4. |
The amount of energy released by the action of detritivores and decomposers in an ecosystem. |
11. The species confined to a particular region and not found elsewhere are termed as:
1. |
Keystone |
2. |
Alien |
3. |
Endemic |
4. |
Rare |
12. During transcription, the DNA site at which RNA polymerase binds is called:
1. Promoter
2. Regulator
3. Receptor
4. Enhancer
13. Occasionally, a single gene may express more than one effect. The phenomenon is called:
1. |
multiple allelism |
2. |
mosaicism |
3. |
pleiotropy |
4. |
polygeny |
14. Consider the two given statements:
Assertion (A): |
The cyclic flow hence, results only in the synthesis of ATP, but not of NADPH + H+. |
Reason (R): |
The excited electron does not pass on to NADP+ but is cycled back to the PS I complex through the electron transport chain.
|
1. |
Both (A) and (R) are True and (R) correctly explains (A) |
2. |
(A) is True but (R) is False |
3. |
(A) is False but (R) is True |
4. |
Both (A) and (R) are True but (R) does not explain (A) |
15. Mark true (T) or false (F) for the given statements:
Statement I: |
Tap root of sweet potato and adventitious roots of carrot, turnip get swollen and store food. |
Statement II: |
Prop roots are hanging and supporting structures in a banyan tree. |
Statement III: |
Stilt root arising from the uppermost nodes in stems of maize and sugarcane are also supporting roots. |
Statement IV: |
Pneumatophores help plants like Rhizophora growing in swampy areas to get oxygen for respiration. |
|
I |
II |
III |
IV |
1. |
T |
T |
F |
F |
2. |
F |
T |
F |
T |
3. |
T |
F |
T |
F |
4. |
F |
F |
T |
T |
16. Concanavalin A is:
1. |
a primary metabolite in living organism and an alkaloid |
2. |
a primary metabolite in living organism and a lectin |
3. |
a secondary metabolite in living organism and a lectin |
4. |
a secondary metabolite in living organism and an alkaloid |
17. Consider the following statements regarding growth in plants -
I: |
Cell enlargement requires water. |
II: |
Oxygen helps in releasing metabolic energy for growth activities. |
III: |
Nutrients are required for synthesis of protoplasm and act as source of energy. |
Which of the above statements are true?
1. |
I and II only |
2. |
I and III only |
3. |
II and III only |
4. |
I, II, and III |
18. Key events during telophase include all the following except:
1. |
Chromosomes cluster at opposite spindle poles and their identity is lost as discrete elements. |
2. |
Nuclear envelope develops around the chromosome clusters at each pole forming two daughter nuclei. |
3. |
Centromeres split and chromatids separate. |
4. |
Nucleolus, Golgi complex, and ER reform. |
19. Given below are four statements pertaining to the separation of DNA fragments using Gel electrophoresis. Identify the correct statements:
a: |
DNA fragments are negatively charged molecules and can be separated by forcing them to move towards the anode under an electric field through a medium/matrix. |
b: |
The separation of DNA fragments is possible because they differ in size. |
c: |
Smaller the size of the DNA fragment, shorter the distance it travels through agarose gel. |
d: |
Pure DNA can be visualized directly by exposing it to UV radiation without any staining. |
Choose the correct answer from the options given below:
1. Only
(c) and
(d)
2. Only
(a) and
(c)
3. Only
(b) and
(c)
4. Only
(a) and
(b)
20. Asexual reproduction in brown algae is by:
1. |
biflagellate biconcave disc shaped zoospores |
2. |
non-motile spherical aplanogametes |
3. |
biflagellate pear shaped zoospores |
4. |
non-motile zoospores produced in zoosporangia |
21. If '+' sign is assigned to beneficial interaction, '–' sign to detrimental and '0' sign to neutral interaction, then the population interaction represented by '+' '–' refers to:
1. mutualism
2. amensalism
3. commensalism
4. parasitism
22. Advantage of cleistogamy is:
1. More vigorous offspring
2. No dependence of pollinator
3. Vivipary
4. Higher genetic variability
23. The process which makes a major difference between C3 and C4 plants is:
1. |
glycolysis |
2. |
Calvin cycle |
3. |
photorespiration |
4. |
respiration |
24. Match each item in Column I with one in Column II and select the correct match from the codes given:
|
Column I |
|
Column II |
A |
Sweet potato and potato |
P |
Analogy |
B |
Thorn of Bougainvillea and tendrils of Cucurbita |
Q |
Homology |
C |
Dicots |
R |
Cretaceous period |
D |
Monocots |
S |
Tertiary period |
Codes:
|
A |
B |
C |
D |
1. |
P |
Q |
R |
S |
2. |
Q |
R |
S |
P |
3. |
R |
S |
P |
Q |
4. |
S |
P |
Q |
R |
25. Which one of the following statements is wrong?
1. |
Vegetative cell is larger than generative cell |
2. |
Pollen grains in some plants remain viable for months |
3. |
Intine is made up of cellulose and pectin |
4. |
When pollen is shed at a two-celled stage, double fertilization does not take place |
26. The inheritance of flower colour in dog flower and 4’O clock plant exhibits:
1. | Complete dominance | 2. | Incomplete dominance |
3. | Co-dominance | 4. | Lethality
|
27. The main function of lenticel is:
1. Transpiration
2. Guttation
3. Gaseous exchange
4. Bleeding
28. Which PGR stimulates the closure of stomata and increases the tolerance of plants to various kinds of stresses?
1. Abscisic acid
2. Ethylene
3. Auxins
4. Cytokinins
29. Which among the following are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and can survive without oxygen?
1. Pseudomonas
2. Mycoplasma
3. Nostoc
4. Bacillus
30. The trigger for activation of toxin of Bacillus thuringiensis is:
1. |
Acidic pH of stomach |
2. |
High temperature |
3. |
Alkaline pH of gut |
4. |
Mechanical action in the insect gut |
31. Pollen grains can be stored for several years in liquid nitrogen having a temperature of:
1. |
–120 °C |
2. |
–80 °C |
3. |
–196 °C |
4. |
–160 °C |
32. Given below is the diagram of a bacteriophage. In which one of the options, all the four parts A, B, C and D are correct?
|
A |
B |
C |
D |
1. |
Sheath |
Collar |
Head |
Tail fibres |
2. |
Head |
Sheath |
Collar |
Tail fibres |
3. |
Collar |
Tail fibres |
Head |
Sheath |
4. |
Tail fibres |
Head |
Sheath |
Collar |
33. In the given diagram showing filamentous
Nostoc, the structure marked as A:
1. |
is a resting spore |
2. |
is involved in nitrogen fixation |
3. |
is gas vacuole |
4. |
is where carbon dioxide concentration mechanism is applied |
34. Gonyaulax is:
1. |
a heterotrophic bacteria pathogenic to cereal crops |
2. |
a dinoflagellate responsible for red tides |
3. |
a free living nematode |
4. |
a thermophilic archaebacterium |
35. Match List I with List II
|
List I |
|
List II |
A. |
Oxidative decarboxylation |
I. |
Citrate synthase |
B. |
Glycolysis |
II. |
Pyruvate dehydrogenase |
C. |
Oxidative phosphorylation |
III. |
Electron transport system |
D. |
Tricarboxylic acid cycle |
IV. |
EMP pathway |
Choose the correct answer from the options given below:
Options: |
A |
B |
C |
D |
1. |
II |
IV |
III |
I |
2. |
III |
IV |
II |
I |
3. |
II |
IV |
I |
III |
4. |
III |
I |
II |
IV |
Botany - Section B
36. Consider the following statements:
I: |
In prokaryotes, control of the rate of transcriptional initiation is the predominant site for control of gene expression. |
II: |
Regulation of lac operon by CAP is referred to as negative regulation. |
III: |
The inducer of the lac operon is lactose. |
Which of the above statements are true?
1. |
I and II only |
2. |
I and III only |
3. |
II and III only |
4. |
I, II, and III |
37. Read the following statements (A-E) and answer the question which follows them.
A: |
In liverworts, mosses, and ferns gametophytes are free-living |
B: |
Gymnosperms and some ferns are hetero-sperms |
C: |
Sexual reproduction in Fucus, Volvox and Albugo is oogamous |
D: |
The sporophyte in liverworts is more elaborate than that in mosses |
E: |
Both, Pinus and Marchantia are dioecious |
How many of the above statements are correct?
1. Two
2. Three
3. Four
4. One
38. Which of the following statements is not true of two genes that show 50% recombination frequency?
1. |
The genes are tightly linked. |
2. |
The genes show independent assortment. |
3. |
If the genes are present on the same chromosome, they undergo more than one crossing-over in every meiosis. |
4. |
The genes may be on different chromosomes. |
39. Consider the following statements regarding fermentation of glucose -
I: |
There is a partial breakdown of glucose |
II: |
There is no gain of ATP |
III: |
NADH is oxidized to NAD+ slowly |
Which of the above statements are true?
1. |
I and II only |
2. |
I and III only |
3. |
II and III only |
4. |
I, II, and III |
40. During diakinesis of prophase I:
I: |
Terminalisation of chiasmata takes place. |
II: |
Meiotic spindle is assembled. |
III: |
Nucleolus disappears and the nuclear membrane breaks down. |
The correct statements are:
1.
I,
II and
III
2.
I and
II only
3.
I and
III only
4.
II and
III only
41. Consider the two statements:
Assertion (A): |
It is necessary to define the boundaries that would demarcate the region and the strand of DNA that would be transcribed. |
Reason (R): |
In transcription, only a segment of DNA and only one of the strands is copied into RNA. |
1. |
Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. |
Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. |
(A) is True but (R) is False. |
4. |
Both (A) and (R) are False. |
42. In the given diagram of chloroplast, enzymes required for the synthesis of carbohydrates and proteins are located in:
43. What limitation of traditional hybridization procedures used in plant and animal breeding can be overcome by recombinant DNA procedures?
I: |
Inclusion and multiplication of undesirable genes |
II: |
Inability of inclusion of desirable traits from other species |
1. |
Only I |
2. |
Only II |
3. |
Both I and II |
4. |
Neither I nor II |
44. Consider the given two statements:
Assertion (A): |
The problem of predation is particularly severe for plants than for animals. |
Reason (R): |
Plants function as producers in an ecosystem. |
1. |
(A) is True but (R) is False |
2. |
Both (A) and (R) are True and (R) correctly explains (A) |
3. |
Both (A) and (R) are True and but (R) does not correctly explain (A) |
4. |
Both (A) and (R) are False |
45. Given below is the diagrammatic representation of one of the categories of small molecular weight organic compounds in the living tissues. Identify the category shown and the one blank component X in it:
1. |
Category: Cholesterol; Component: Guanine |
2. |
Category: Amino acid; Component: NH2 |
3. |
Category: Nucleotide; Component: Adenine |
4. |
Category: Nucleoside; Component: Uracil |
46. Identify the correctly matched pairs:
I:
|
Sieve cell
|
Food conducting element in gymnosperms
|
II:
|
Sieve-tube element
|
Food conducting element in angiosperms
|
III:
|
Albuminous cells
|
Delivery of substances to sieve-tube element
|
IV:
|
Companion cell
|
Delivery of substances to sieve cells
|
1. Only I and II
2. Only III and IV
3. Only I and III
4. Only II and IV
47. The gynoecium consists of many free pistils in flowers of:
1. Aloe
2. Tomato
3. Papaver
4. Michelia
48. The diagram shows the inflorescence scheme and the floral diagram of the family:
1. |
Liliaceae |
2. |
Gramineae |
3. |
Leguminosae |
4. |
Rosaceae |
49. Consider the two statements:
Statement I: |
The proteins encoded by the genes cryIAc and cryIIAb control the corn borer. |
Statement II: |
The proteins encoded by the gene cryIAb control the cotton bollworms. |
1. |
Statement I is correct; Statement II is correct |
2. |
Statement I is incorrect; Statement II is correct |
3. |
Statement I is correct; Statement II is incorrect |
4. |
Statement I is incorrect; Statement II is incorrect |
50. Some amino acids are coded by more than one codon. Hence genetic code is:
1. |
Unambiguous |
2. |
Non-specific |
3. |
Degenerate |
4. |
Universal |
Zoology - Section A
51. Consider the following statements:
I: |
Statins, used as blood cholesterol-lowering agents, are derived from Monascus purpureus |
II: |
Cyclosporin A, derived from Trichoderma, is used as an immunosuppressant |
III: |
Baculoviruses, in the genus Nucleopolyhederovirus, are species-specific, broad-spectrum insecticides |
Which of the above statements are true?
1. I and II only
2. I and III only
3. II and III only
4. I, II and III
52. The development of
Periplaneta americana is:
1. |
Paurometabolous with nymph moulting about 13 times to reach the adult form and the next to last nymphal stage has wing pads. |
2. |
Paurometabolous with nymph moulting about 13 times to reach the adult form and the next to last nymphal stage has wings. |
3. |
Holometabolous with nymph moulting about 13 times to reach the adult form and the next to last nymphal stage has wing pads. |
4. |
Holometabolous with nymph moulting about 13 times to reach the adult form and the next to last nymphal stage has wings. |
53. Identify the incorrectly matched pair regarding the morphology of
Periplaneta americana:
1. |
Tegmina |
Forewings |
2. |
Tergites |
Ventral sclerites |
3. |
Labrum |
Upper lip |
4. |
Hypopharynx |
Tongue |
54. Types of cell junctions that are found in the epithelium and other tissues that facilitate the cells to communicate with each other by connecting the cytoplasm of adjoining cells are:
1. Tight junctions
2. Adhering junctions
3. Gap junctions
4. Plasmodesmata
55. Which part of the ovary in mammals acts as an endocrine gland after ovulation?
1. |
Graafian follicle |
2. |
Stroma |
3. |
Germinal epithelium |
4. |
Vitelline membrane |
56. Unmyelinated nerve fibre:
I: |
is enclosed by a Schwann cell that does not form a myelin sheath around the axon |
II: |
is commonly found in autonomous and the somatic neural systems |
1. Only
I
2. Only
II
3. Both
I and
II
4. Neither
I nor
II
57. Inflammation of bronchi and bronchioles leading to difficulty in breathing is characteristically seen in:
1. Bronchial asthma
2. Emphysema
3. Tuberculosis
4. Pneumonia
58. Baculoviruses are excellent candidates for:
1. |
Species-specific, narrow-spectrum insecticidal applications |
2. |
Species-specific, broad-spectrum insecticidal applications |
3. |
Biocontrol of fungal diseases |
4. |
Biocontrol of aphids and mosquitoes |
59. In a sarcomere, the central part of thick filament, not overlapped by thin filaments is called the:
1. A band
2. I band
3. H zone
4. M line
60. Metagenesis refers to?
1. |
The presence of different morphic forms |
2. |
Alternation of generation between asexual and sexual phases of an organism |
3. |
Occurrence of a drastic change in the form during post-embryonic development |
4. |
Presence of a segmented body and parthenogenic mode of reproduction |
61. Neural signals through the sympathetic nerves (part of ANS) can increase the:
I: |
rate of heartbeat |
II: |
strength of ventricular contraction |
III: |
cardiac output |
1. Only
I and
II
2. Only
I and
III
3. Only
II and
III
4.
I,
II and
III
62. In the schematic representation of gametogenesis in humans, what will be the correct description for A- E?
|
A |
B |
C |
D |
E |
1. |
First meiotic division |
Second Meiotic division |
23 |
First polar body |
Second polar body |
2. |
Mitosis and differentiation |
First meiotic division |
23 |
First polar body |
Secondary polar body |
3. |
First meiotic division |
Second Meiotic division |
46 |
First polar body |
Second polar body |
4. |
Mitosis and differentiation |
First meiotic division |
46 |
First polar body |
Secondary polar body |
63. Match each item in Column I with one in Column II and select the correct match from the codes given:
|
Column I |
|
Column II |
A |
Ribosome |
P |
Acid hydrolases |
B |
Lysosome |
Q |
Protein synthesis |
C |
Centrosome |
R |
Chromatin subunit |
D |
Nucleosome |
S |
Cell division |
Codes:
|
A |
B |
C |
D |
1. |
Q |
P |
S |
R |
2. |
P |
Q |
R |
S |
3. |
P |
Q |
S |
R |
4. |
Q |
P |
R |
S |
64. A polysome is:
1. |
several mRNA molecules attached to a ribosome |
2. |
several ribosomes attached to a single mRNA |
3. |
the three major types of cellular RNAs attached to an mRNA molecule |
4. |
many ribosomes attached to the surface of endoplasmic reticulum |
65. Pelvic Inflammatory Diseases (PIDs) are a recognized complication of:
1. use of barrier contraceptives
2. sexually transmitted infections
3. periodic abstinence
4. oral contraceptive pills
66. In RNA splicing:
1. |
Exons are removed and introns are joined together |
2. |
Introns are removed and exons are joined together |
3. |
Cistrons are removed and introns are joined together |
4. |
Introns are removed and Cistrons are joined together |
67. Consider the two given statements:
Statement I: |
Glucagon acts mainly on the liver cells (hepatocytes) and stimulates glycogenolysis resulting in hyperglycemia. |
Statement II: |
Insulin causes a rapid movement of glucose from the blood to hepatocytes and adipocytes resulting in hypoglycemia. |
1. |
Statement I is incorrect; Statement II is incorrect |
2. |
Statement I is incorrect; Statement II is correct |
3. |
Statement I is correct; Statement II is correct |
4. |
Statement I is correct; Statement II is incorrect |
68. It is unfortunate that in our society women are blamed for producing female children and have been ostracised and ill-treated because:
1. |
The sex is determined by the type of sperm fertilizing the egg |
2. |
The sex is determined by the type of egg fertilizing the sperm |
3. |
The sex is determined by the hormones produced by the fetus |
4. |
The sex is determined by God’s Will |
69. Identify the incorrect statement:
1. |
Biodiversity is the term popularised by the sociobiologist Edward Wilson to describe the combined diversity at all levels of biological organisation. |
2. |
IUCN stands for International Union for Conservation of Nature and Natural resources. |
3. |
Robert May places the global species diversity in the range of 20 to 50 million. |
4. |
More than 25 percent of the drugs currently sold in the market are derived from the plants. |
70. ICBN stands for:
1. Indian Congress of Biological Names
2. International Code of Botanical Nomenclature
3. Indian Code of Botanical Nomenclature
4. International Congress of Biological Names
71. Transplantation of tissues/organs fails often due to non-acceptance by the patient's body. Which type of immune-response is responsible for such rejections?
1. Cell-mediated immune response
2. Hormonal immune response
3. Physiological immune response
4. Autoimmune response
72. Given below are two statements : one is labelled as Assertion
(A) and the other is labelled as Reason
(R).
Assertion (A): |
The logistic growth model is more realistic for most animal populations in nature. |
Reason (R): |
Resources for growth for most animal populations are finite and become limiting sooner or later in the nature. |
In the light of the above statements, choose the most appropriate answer from the options given below :
1. |
(A) is True but (R) is False. |
2. |
Both (A) and (R) are True and (R) correctly explains (A). |
3. |
(A) is False but (R) is True. |
4. |
Both (A) and (R) are True but (R) does not explain (A). |
73. The risk of erythroblastosis foetalis exists when:
1. |
an Rh positive mother is carrying an Rh negative foetus |
2. |
an Rh negative mother is carrying an Rh positive foetus |
3. |
an Rh positive mother is carrying an Rh positive foetus |
4. |
an Rh negative mother is carrying an Rh negative foetus |
74. For DNA replication, deoxyribonucleoside triphosphates:
I: |
act as substrates |
II: |
provide energy for polymerisation reaction |
1. Only
I
2. Only
II
3. Both
I and
II
4. Neither
I nor
II
75. Stimulation of a muscle fiber by a motor neuron occurs at:
1. the neuromuscular junction
2. the transverse tubules
3. the myofibril
4. the sarcoplasmic reticulum
76. Identify the microorganism which is responsible for the commercial production of citric acid:
1. Streptococcus cerevisiae
2. Trichoderma polysporum
3. Clostridium butylicum
4. Aspergillus niger
77. What is the maximum number of oxygen molecules that a molecule of haemoglobin can carry?
1. 2
2. 4
3. 6
4. 8
78. Select the option including all sexually transmitted diseases:
1. Gonorrhoea, Malaria, Genital herpes
2. AIDS, Malaria, Filaria
3. Cancer, AIDS, Syphilis
4. Gonorrhoea, Syphilis, Genital herpes
79. Consider the two statements:
Statement I: |
In male frogs, the testes are found adhered to the upper part of the kidneys and have a functional connection with the kidneys. |
Statement II: |
In female frogs, the ovaries are situated near the kidneys and there is no functional connection with the kidneys. |
1. |
Statement I is correct, Statement II is correct |
2. |
Statement I is incorrect, Statement II is correct |
3. |
Statement I is correct, Statement II is incorrect |
4. |
Statement I is incorrect, Statement II is incorrect |
80. What constitutes about 50% of the lymphoid tissue in the human body?
1. |
Malt |
2. |
Spleen |
3. |
Lymph nodes |
4. |
Liver |
81. Match each item in Column I with one in Column II and select the correct match from the codes given:
|
Column I |
|
Column II |
A |
Aspergillus niger |
P |
Swiss cheese |
B |
Streptococcus |
Q |
Citric acid |
C |
Trichoderma polysporum |
R |
Cyclosporin A |
D |
Propionibacterium shermanii |
S |
Clot buster |
Codes:
|
A |
B |
C |
D |
1. |
Q |
S |
R |
P |
2. |
P |
Q |
S |
R |
3. |
R |
P |
Q |
S |
4. |
S |
R |
P |
Q |
82. Histones are rich in amino acids:
1. |
Arginine and Lysine |
2. |
Arginine and Leucine |
3. |
Arginine and Isoleucine |
4. |
Aspartate and Glutamate |
83. India’s share of world land area and global species diversity in percentages, respectively, is:
1. 2.4 and 8.1
2. 3.1 and 12
3. 3.3 and 9.6
4. 3.7 and 9.9
84. Match each item in Column I with one in Column II and select the correct match from the codes given:
|
Column I |
|
Column II |
A |
Antigen |
P |
a chemical produced by the human body in response to the presence of a foreign substance |
B |
Antibody |
Q |
a foreign substance that causes the human body to produce a special chemical in response to its presence |
C |
Active immunity |
R |
immunity acquired as a result of injection of a vaccine containing live micro-organisms |
D |
Passive immunity |
S |
immunity acquired as a result of the injection of a vaccine containing antibodies |
Codes:
|
A |
B |
C |
D |
1. |
Q |
P |
R |
S |
2. |
Q |
P |
S |
R |
3. |
P |
Q |
R |
S |
4. |
P |
Q |
S |
R |
85.
Assertion(A): |
DNA fragments can be separated by forcing them to move towards the anode under an electric field through a medium/matrix. |
Reason(R): |
DNA fragments are negatively charged molecules. |
1. |
Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. |
Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. |
(A) is True but (R) is False. |
4. |
(A) is False and (R) is True. |
Zoology - Section B
86.
Assertion(A): |
Selection of recombinants from non-recombinants on the basis of their ability to produce colour in the presence of a chromogenic substrate is more cumbersome than selection of recombinants due to inactivation of antibiotics. |
Reason (R): |
A selectable marker is a gene introduced into a cell, especially a bacterium or to cells in culture, that confers a trait suitable for artificial selection. |
1. |
Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. |
Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. |
(A) is True but (R) is False. |
4. |
(A) is False and (R) is True. |
87.
Assertion (A): |
One of the reasons why cancer kills is that cancer cells starve normal cells of their nutrition. |
Reason (R): |
Cancer cells reach distant sites in the body and start a new tumour there. |
1. |
Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. |
Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. |
(A) is True but (R) is False. |
4. |
Both (A) and (R) are False. |
88. Frogs exhibit sexual dimorphism. Male frogs can be distinguished from the females by the presence of:
I: |
sound producing vocal sacs which are absent in female frogs. |
II: |
a copulatory pad on the first digit of the hind limbs which is absent in female frogs. |
1. Only
I is correct
2. Only
II is correct
3. Both
I and
II are correct
4. Both
I and
II are incorrect
89. Which of the following statements are true for the phylum-Chordata?
(a) |
In Urochordata, notochord extends from head to tail and is present throughout their life |
(b) |
In Vertebrata, notochord is present during the embryonic period only |
(c) |
Central nervous system is dorsal and hollow |
(d) |
Chordata is divided into 3 sub-phyla : Hemichordata, Tunicata and Cephalochordata |
1. (c) and (a)
2. (a) and (b)
3. (b) and (c)
4. (d) and (c)
90. What would not be true regarding thyroid hormones?
1. |
Thyroid hormones play an important role in the regulation of the basal metabolic rate. |
2. |
Thyroid hormones support the process of red blood cell formation. |
3. |
All hormones secreted by the thyroid gland are iodothyronines. |
4. |
Maintenance of water and electrolyte balance is also influenced by thyroid hormones. |
91.
Assertion (A): |
Oxygenation of blood in the lungs displaces carbon dioxide from hemoglobin, increasing the removal of carbon dioxide. |
Reason (R): |
A high concentration of CO2 facilitates dissociation of oxyhemoglobin. |
1. |
Both (A) and (R) are True but (R) does not correctly explain (A). |
2. |
(A) is True but (R) is False. |
3. |
Both (A) and (R) are True and (R) correctly explains (A). |
4. |
(A) is False but (R) is True. |
92. All the following are preconditions if a population is to remain in genetic [Hardy-Weinberg] equilibrium except:
1. Population is large
2. No mutations are occurring
3. Mating is not random
4. No gene migration or gene flow
93. Given below is a hypothetical pyramid of energy. The amount of energy left at the level of secondary consumers would approximately be:
1. |
10000 J |
2. |
1000 J |
3. |
100 J |
4. |
50 J |
94. The son of a woman who carries the gene for colour blindness [but herself is not affected]:
1. |
can never be colour blind |
2. |
has a 25 per cent chance of being colour blind |
3. |
has a 50 per cent chance of being colour blind |
4. |
has a 100 per cent chance of being colour blind |
95. The given figure shows stages in cross bridge formation, rotation of head and breaking of cross bridge during muscle contraction. Select the correct match for A, B and C from the codes given:
I. Sliding or rotation |
A |
II. Breaking of cross bridge |
B |
III. Formation of cross bridge |
C |
Codes:
|
I |
II |
III |
1. |
B |
A |
C |
2. |
B |
C |
A |
3. |
A |
B |
C |
4. |
C |
A |
B |
96. A human female who is not color blind but whose father was color blind marries a normal male. What proportion of their male progeny will have red-green color blindness?
97. At the time of puberty, the ovary in a female contains:
1. |
primary follicles with primary oocyte arrested at prophase I of meiosis I |
2. |
secondary follicles with primary oocyte arrested at prophase I of meiosis I |
3. |
primary follicles with primary oocyte arrested at metaphase II of meiosis II |
4. |
mature Graafian follicle with a completely mature ovum |
98. What adaptation would be seen in the kidneys of a mammal living in desert when compared to the kidneys in aquatic mammals?
1. |
A higher percentage of cortical nephrons with short loop of Henle extending slightly into the medulla |
2. |
A higher percentage of cortical nephrons with long loop of Henle extending deep into the medulla |
3. |
A higher percentage of juxtamedullary nephrons with long loop of Henle extending deep into the medulla |
4. |
Presence of only juxtamedullary nephrons with long loop of Henle extending deep into the medulla |
99. Which of these statements about the ABO blood group is NOT true?
1. |
A person with type O blood can donate blood to individuals with type A, B, AB, or O blood types. |
2. |
Transfusions should be made considering the plasma of the donor and the erythrocytes of the patient (recipient). |
3. |
A person with type A blood should not receive a transfusion from someone with type AB blood. |
4. |
A person with type O blood has both the A and B antigens. |
100. Identify a vertebrate chordate amongst the following:
1. Ascidia
2. Doliolum
3. Brannchiostoma
4. Petromyzon
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